The government has said it is very worried by a staff member at the UK’s Hong Kong consulate who has not returned to work since a trip to mainland China nearly two weeks ago. Simon Cheng failed to report back to the office on 9 August, a day after visiting Shenzhen, according to local reports. The city, which is an autonomous region of China, has been gripped by anti-government protests for around two months. The mainland has been stepping up pressure on Hong Kong, with shows of military force on the other side of the border. “We are extremely concerned by reports that a member of our team has been detained returning to Hong Kong from Shenzhen,” said a foreign office spokesperson. They added: “We are providing support to his family and seeking further information from authorities in Guangdong Province and Hong Kong.” Hong Kong became a British colony after the opium wars. It was handed back to the Chinese in 1997. More to follow.